Incandescent gas-lamp.



No'. 7|4,443. Patented Nov. 25, |9102.

` T. BRABsoN. mcANnEscENT GAS LAMP.

(Application filed Apr. 25, 1901,)

(No Model.) 2 shamsheet Milligan! No. 7|4,443. z Patented Nuv..25, |902. 1 T. BRAsoN. u

. `INCANDSGENT GAS LAMP.

(Application led Apr. 25, 1901..)

(Nolodal.) 2 Sheets-Sheet 2.-

fil-- Imm-lili.

A 7TOHNEY i UNITED STATES PATENT Ormel-3.

` TOM BRABSON, OF BROOKLYN, NEW YORK, ASIGNOR TO BRABSO'N LAMP AND MANUFACTURING COMPANY, A CORPORATION OF NEW YORK.

INCANDESCENT GAS-LAM P.

T 4 l 1 SPECIFICATION forming part o f Letters IfatentNo. 714,443, dated November 25, 1902.

i Application liled April 25, 1901. Serial No. 57,477. CND model.)

To a/ZZ whom t may concern,.-

Be it known that I, TOM BRABSON, a citizen of the United States, residingin the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Incandescent Gras-` Lamps, of which the following is a specification, reference being had therein to the accompanying drawings, in which-'- Figure l is a side elevation of the lamp, the globe being shown in section; Fig. 2, a vertical sectional View of one of the burners; Fig. 3,'a plan view of the adjustable mantlesupport; Fig. 4, a side elevation of the mantle-support; Fig. 5, a horizontal sectional View n the line V Vof Fig. l, the mantles being removed; Fig. 6, a transverse vertical sectional View taken on the line VI Vl of Fig,

\ Fig. 7, a vertical sectional view ofthe base-` piece or burner-support,taken on Vthe line VII VII of Fig. 5; Fig. 8, a bottom view ofthe burner-support; and Fig. 9, a side elevation of the burner support, the draft directing shield being shown in section and of a slightly-different form.

One of the objects of the invention is to produce a lamp of simple construction, wherein through the perforated base to cool the same a depending perforated draft-direct shield,

whereby cool air from below will be drawnup and the burners.

Anotherobject of the invention isto provide means for suspending the mantles from the central supply-pipe` ,whe1eby said mantles may be independently or simultaneously adjusted to the burners, and to provide pivoted globe-supporting arms which maybe swung laterally to permit the globe to be passed up over them and to be then drawn back in position to support the globe.

A further object of the invention is to provide a simple and efficient air and gas mixer 5o and burner.

`Other important objects of the invention and novel combination of parts will be hereinafter described.

Referring to the various parts by numerals, l designates a vertical supply and supporting pipe, to the lower end of which is threaded a circular base-piece or burner-support 2,which is perforated and is provided on its upper su rface with four upward-extending externallythreaded nipples 3, which are adapted to receive the burners. These nipples communicate with passages 4in depending radial ribs which are integral with the base-piece, said passages extending inward and downward and opening at their inner ends into a central vVertical passage 5. This passage 5 communicates at its upper end with the supplypipe l and at its lower end with a downwardextending drainage-tube 6, whose lower end is closed by a screwcap 7. Clamped between the screw-cap 7 and the bottom of the burnersupport 2 is an air-directing annular shield 8, which is hollow and is provided witha series uof apertures through which air is drawn by the burners. These apertures are located a considerable distance below the burner-support to prevent the hot air about the base of the burners from being drawn in through the air-directing shield and to permit the cool `air from below the burner-support to pass up vsubstantially straight path to the perforationslin the burner-support.l In Fig. 9 the upper part of the shield is formed cylindrical, andV from the lower edge of this cylindrical part a substantially horizontal wall extends inward a short distance. In this wall are formed apertures for the admission of the air. From the inner end of this horizontal wall the shield is tapered toward its lower ICO , disk 15, of wire-gauze.

end, additional apertures being formed in this tapered part. that this shield may be of any desired shape.

The object of inclining the passages i inward and downward and connecting the passage 5 with the tube 6 is that these passages will be readily drained of any water which may be condensed in them or in the sup-plypipe. It will also be seen that any deposit lodging in these passages may be readily taken therefrom through the tube 6.

Threaded on each of the nipples 3 is a burner-coupling 9, which is provided at its upper end with a diaphragm 10, having small perforations therein to reduce the amount of gas flowing to the burner. Threaded on the upper end of this coupling is the burner 1l, which consists of the tubular part 12, which is provided near its lower end with an annular series of air-inlets 13 and at its upper end with the enlarged annular chamber 14, across the upper end of which is secured the concave Formed integral with the tubular part 12, just above the upper ends of the openings 13, is an outward and downward extending air-directing hood 16, which is open atits lower end, said lower end extending below the lower ends of the openings 13. The object of this hood is to direct the upwardlowingcurrents of air in through the openings 13 and to prevent any transverse currents or drafts through the tube. Fitting over the enlarged portion 1l, so as to be slidably removable therefrom, is a tubular cap 17, whose lower end rests on an annular flange 17%formed on the enlargement 1li. This cap extends above the upper end of the enlargement 14, and across the upper end ofsaid cap is secu red a convex disk l8,ofwiregauze, a mixing-chamber being formed between the two disks of gauze, as is clearly shown in Fig. 2. In the center of the upper gauze disklS is secured a circular spreader-plate 19;, the objcet of which is to spread the upward-flowing gas and airmixture and cause it to produce a tubular llame. It is obvious that the two disks of gauze may be secured in the chamber 14, il" it is desired, and the cap 17 dispensed with.

To the central supply-pipe is adjnstably secured a spider 20,whose lateral arms 21 are vertically slotted to receive the vertical mantle-supporting rods 22,which are directly over the centers of the burners, the lower ends of these rods being formed into hooks which engage the cross-wires secured in the tops of the mantles. These rods 22 are secured in the slots of the spider-arms 21 by means ot' screws 23, so that said rods are vertically adjustable to permit the mantles to be independently adjusted to the burners, and the spider is vertically and rotatably adjustable on the supply-pipe by screw 30 in order that the mantles may be simultaneously adjusted either up or down or around the supportingpipe to properly locate the mantles over the It is obvious, however,`

burners. t will of course be readily understood that' the spider may be dispensed with and any other suitable horizontal support secured centrally on the supply-pipe in its place and that said support may be provided with vertical perforations instead of slots to receive the mantlesnpporting rods. It will also be readily understood that these arms may be secured in place by any suitable means. Another object of hanging the mantles on the depending vertical rods 22 and securing said rods to the arms of the spider directly over the centers of the burners is to secure a rigid support for each of the mantles, which will not bend with the weight of the mantle when said support is heated, and to dispense with the usual mantle-supporting rod, which is secured to the burner and extends up outside'of the mantle, its upper end being bent laterally to engage the cross-wire in the top of the mantle, as these rods obstruct the lights and are unsightly.

On the base 2 are pivoted at their inner ends a series ot' horizontal globesupporting arms 2li, which are adapted to permit the globe to be passed up above them and to be then swung outward to their radial positions to support the globe. The object of thus pivoting the globe-supporting arms so that they will have a horizontal pivotal motion is that in putting the globe in placeit will not be necessary to raise the globe as high as when the globe-supporting arms are swung up vertically. Another object of thus pivoting the globe-supporting arms is that they may be readily reached and swung back into position to support the globe after the globe has been raised above the base.4

The supply-pipe just above the base is provided with a valve 25, whose stem is extended beyond the vertical plane of the base and is provided with an operating-arm 26, to the outer end of which is connected adepending' operating-handle 27. Above this valve and about on a level with the top of the mantles the supply-pipe is provided with a by-pass or pilot-light 2S, a valve 29 being provided to regulate the flow of gas through said bypass. The object of this pilot-light is to maintain a small flame always burning at the top of the mantles to permit of the lighting of the lamp at any time by simply opening the valve 25.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination of a supply-pipe, a perforated burner-support connected thereto, a series of burners mounted on said support and in communication with the supply-pipe, and a downward-extending shield secured to and encircling the burner-support beyond the perforations therein whereby said perfora- IOO IIO

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tions open within the shield and said shield prevents hot air about the burner-support from being drawn in through the perforations in said support and permits cool air from below said support to pass through the perforations in the support to cool it and the burners i and to give a full supply of air around each als of the burners.

2. The combination of a supply-pipe, abase secured thereto and formed with a central passage connected at its upper end with the supply-pipe, lateral ribs formed on the base and having downward and inward extending passages communicating at their lower innerY support, a series of upward-extending burners on said support, and a series of horizontal globe-supporting arms pivoted at their inner ends between the burners and adapted to swing inward to permit the globe to be passed over them, the burners forming stops to limit the movement of the arms and to prevent their outer ends moving in beyond the edge of the burner-support'whereby said arms may be readily engaged and swung outward to support the globe.

4. In an incandescent gas-lamp the combination of `a vertical central supply-pipe, a series of upward-extending burners supported by said pipe and in communication there-` with, a valve in the supply-pipe to control the iiow to the burners, a by-pass in the pipe above the valve and adjacent the top of the mantles, and a valve to control the flow from the by-pass whereby a permanent pilot-light may be maintained at the top of the mantles. 5. In an incandescent gas-lamp, the combination of a supply-pipe, a perforated burnersupport connected thereto, a series of burners mounted on said support and in communication with the supply-pipe, cach of said burners consisting of a tubular part formed with a series of airinlets near its lower end, and an outward and downward extending hood protecting said openings, an enlarged chamber in the top of the tubular part, two separated gauze disks in said chamber, a mixing-space being formed between said disks,and a downward-extending airshield secured to the burner-support beyond the perforations therein whereby the said perforations open within the shield and said shield prevents hot air about the burner-su pport from being drawn in through the perforations in said support and permits cool air from below said support to pass up through the perforations in said support to cool it and the burners and to give a full supply of air around each of the burners.

6. In a gas-lamp, the combination of a central vertical supplypipe, a burner-support connected to the lower end thereof, and provided with a central passage communicating at its upper end with the supply-pipe and at its lower end with a downward-extending drainage-tube, and with a series of downward and inward inclined passages, a series of burners mounted on the burner-support and in communication with the inclined passages in the burner-support, of the burnersupport and a closure for the lower end of the drainage-tube.

7. In an incandescent gas-lamp, the combination of a vertical central supply-pipe, a series of upward-extending burners supported by and communicating with the lower end thereof, a vertically-adjustable mantle-support secured to said supply-pipe, a valve in said supply-pipe to control the ow to the burners, a by-pass in said supply-pipe above the valve, and a valve to control the iiow.

from the by-pass.

8. lIn an incandescent gas-lamp, the combination of a supply-pipe, a perforated burnersupport connected to the supply-pipe, a series of burners mounted on said support and in communication with the supply-pipe each of said burners consisting of a tubular part formed with an air-inlet near its lower end, an enlarged chamber at the top of the tubular part, a gauze disk at the top of said chamber, and a downward-extending shield secured to the burner-support beyond the perforations therein whereby the said perforations open within the shield and said shield prevents hot air about the lburnersupport from being drawn in through the perforations in said support and permits cool air from below said support to pass up through the perforations in the support to cool it and the burners and to give a full supply of cool air around each of the burners.

9. In a gas-lamp, the combination of a central vertical supply-pipe, a burner-support connected to the lower end thereof, a series of burners mounted on said burner-support, and a series of downwardly-extending passages from said burners and having an outlet for drainage at their lower ends.

TOM BRABSON.

Witnesses:

J. E. A. CRISWELL, JOHN G. PEARSE.

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